PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FLEXITE STANDARDInsulation Sleeving,electrical

Markel Corp. · NSN 5970-00-636-1771 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-636-1771 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-636-1771. Primary manufacturer part number: FLEXITE STANDARD.
Features
  • Insulation Sleeving,electrical — FSC 5970
  • 20 verified cross-references
  • Primary manufacturer: Markel Corp.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-00-636-1771, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Markel Corp.. This item has 20 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameInsulation Sleeving,electrical
FSC / FSG5970 — No Item Name Available (FSG 59)
ManufacturersMarkel Corp. (CAGE 03890); Atkins & Pearce, Inc (CAGE 1T0Q8); Varflex Corporation Dba Varflex Corp (CAGE 79074); Essex Group Inc Suflex/iwp Div (CAGE 91094); Lockheed Martin Corporation Dba Lockheed Martin Aerostructures (CAGE 23991)
Technical Specifications
ParameterValue
NSN5970-00-636-1771
Primary Part NumberFLEXITE STANDARD
Item NameInsulation Sleeving,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerMarkel Corp.
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-071-1594 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-087-2061 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-087-2065 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-485-2087FE16CSW000 INTERCHANGEABLE
Insulation Sleeving,electrical
Markel Corp.
5970-00-552-9567 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-615-55329025772 INTERCHANGEABLE
Insulation Sleeving,electrical
Us Army Aviation and Missile Command
5970-00-879-0524 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-954-8355 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-954-8365 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-01-111-1778 INTERCHANGEABLE
Insulation Sleeving,electrical
Cross-Reference Index
Part NumberManufacturer
FLEXITE STANDARD PRIMARY Markel Corp. (USA)
ASTRA 701 PRIMARY Atkins & Pearce, Inc (USA)
VARTUBE PRIMARY Varflex Corporation Dba Varflex Corp (USA)
ASTRA 701 Essex Group Inc Suflex/iwp Div (USA)
118A1641P126 Lockheed Martin Corporation Dba Lockheed Martin Aerostructures (USA)
GLITEX 120 Nalge Co Div of Sybron Corp (USA)
NATVAR 261 High Voltage Engineering Corp Natvar Co Div (USA)
7956567-77 Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA)
3002 Minnesota Mining and Mfg Co 3m Company (USA)
HYFLEX TRANSFLEX Minnesota Mining and Mfg Co 3m Company (USA)
8034668-26 Us Army Aviation and Missile Command (USA)
MILI22076 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SURCO B-5 Rscc Wire & Cable Llc (USA)
3002 3m Co Admininistrative Electronic & Communications (USA)
415191-18-B Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
MIL-I-631 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HYFLEX TRANSFLEX 3m Co Admininistrative Electronic & Communications (USA)
7472368-25 Lockheed Martin Corporation Div Rms (USA)
ITCO 919 Insultab Inc Div Pexco Athol (USA)
GMS5-13-31-0 Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA)
Related Parts
5970-00-071-1594INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-087-2061INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-087-2065INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-485-2087INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
FE16CSW000
5970-00-552-9567INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-615-5532INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
9025772
5970-00-879-0524INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-954-8355INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-954-8365INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-01-111-1778INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-01-327-4079INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-01-328-8010INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL

Frequently Asked Questions

What is NSN 5970-00-636-1771?

NSN 5970-00-636-1771 is a Insulation Sleeving,electrical, manufactured by Markel Corp., classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-636-1771?

NSN 5970-00-636-1771 has 20 cross-referenced part numbers: FLEXITE STANDARD (Markel Corp.), ASTRA 701 (Atkins & Pearce, Inc), VARTUBE (Varflex Corporation Dba Varflex Corp), ASTRA 701 (Essex Group Inc Suflex/iwp Div), 118A1641P126 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures) and 15 more.

What NSN replaces 5970-00-636-1771?

There are 12 known substitutes for 5970-00-636-1771: 5970-00-071-1594, 5970-00-087-2061, 5970-00-087-2065 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 5970-00-636-1771 still in active supply?

NSN 5970-00-636-1771 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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